[cherry-pick][APU] Add model cache(#4456)#4468

Merged

hong19860320 merged 1 commit intoPaddlePaddle:release/v2.7from hong19860320:hongming/cp_27_apu_cache

Sep 28, 2020

+450-72

Commits on Sep 27, 2020

[cherry-pick][APU] Add model cache(PaddlePaddle#4456 )

barry-ai
authored and
hong19860320
committed